Pros: Resists impact damage, looks, reliability.
Cons: Not a light rim, may only use disc brakes.
----- Overview -----
The market for wheels has become very crowded, with both large and small companies jumping into the parts market. With more and more high-end mountain bikes being modified and home-built, there is a demand for strong rims that arent too expensive. Mavic has been in the bicycle wheel business for many years now, and its for this reason I chose to build my wheels using their rims.
The X317 rim weighs 395g, and is specifically designed to withstand the increased stress caused by disc braking.
----- My comments -----
Since I wanted to use disc brakes, I decided to go with the Mavic X317 rim. I chose the black color, although it comes in both black and silver. While building my wheels, I was impressed with Mavics construction quality. Both my previous bikes came with Mavic wheels, and I was happy with their durability.
Typical bikes have brakes near the edge of the wheel. These are called v-brakes, and use brake pads that apply force to the rim face. This works quite well, except in muddy, wet, or very hilly conditions. V-brakes tend to get congested and slippery when wet, reducing their effectiveness greatly. The X317 is a disc brake compatible rim, meaning you must purchase disc brakes to use it. Disc brakes mount on the hub of your wheel, and apply force to a brake rotor just like a car. This gives you more braking surface, and better foul-weather performance.
So far I've ridden just over 300 miles on my X317 rims, and I couldnt be happier. I've hit a tree head on, dropped over 15 ledges, and raced hard over 100 of my 300 miles. Only a slight front wheel adjustment was required after hitting the tree. Aside from that, both wheels have stayed true and steady. Some credit has to go to my spokes and hubs, but the rims have definitely held up well.
I look forward to riding these rims for quite some time, and since they are a disc brake rim, I dont have to worry about v-brakes wearing through the rim face. If you are considering upgrading to disc brakes, I would give the Mavic X317 a good look. For the price, its hard to find a better rim.
These are meant as an XC (cross country) rim and not downhill. If you are riding or racing downhill and like to jump often, choose one of Mavic's heavier rims as they are made for abuse.
Here is a link to owner reviews of the X317 at MTB Review.com
Follow this link to Mavic's Homepage: http://www.mavic.com/servlet/srt/mavic/home?lg=uk
Thanks for reading, and feel free to comment!